This is the first time I've had to do my tax return, working out income and expenses. I've not been very organised over the year and am now suffering. I called the tax helpline and they need a record of actual miles for me to claim mileage. I did this for a few weeks then got lazy and can't face going over every day last year to work out how many miles I did. I did see on the hmrc site that 'the actual cost of car expenses for childminding purposes can be claimed instead.' But I don't know what this means!! Can anyone clarify this for me??